Hillary Clinton, rear center, leaving hospital. Frank Franklin II/AP Photo.

Secretary of State Hillary Clinton has been released from the hospital following treatment for a blood clot in her head, the State Department confirmed on Wednesday.

In a statement, Deputy Assistant Secretary Philippe Reines said Clinton's medical team "advised her that she is making good progress on all fronts, and they are confident she will make a full recovery. She's eager to get back to the office."

Clinton's daughter Chelsea tweeted, "Thank you to the doctors, nurses & staff at New York Presbyterian Hospital Columbia University Medical Center for taking great care of my Mom.'

State Department spokesperson Victoria Nuland told reporters on Wednesday that the secretary has been "quite active on the phone," working from the hospital, regularly speaking to State Department staff.

Last Sunday, Secretary Clinton was admitted for treatment of a blood clot in her head that developed following a concussion she sustained earlier this month after fainting from illness. The pictures of Clinton, smiling and wearing sunglasses, are the first time she has been seen in public since Dec. 7.

Earlier on Wednesday the Secretary was seen by journalists leaving a building at New York-Presbyterian Hospital with her husband and daughter. Officials told the Associated Press that Clinton was just having tests done at another location on the sprawling hospital campus.

Hours later, she was released for good, driving away in a black van with her family.